Remove sdkPreSingleton and overlaySingleton

These were the only 2 pre-singletons in soong. sdkPreSingleton is
totally unused. overlaySingleton can be done during
GenerateAndroidBuildActions instead.

Test: m nothing --no-skip-soong-tests
Change-Id: Ieb5ab92f18cb56be4049c0842f61df8aa02dc52c

7 files changed, 34 insertions, 111 deletions

diff --git a/java/android_manifest_test.go b/java/android_manifest_test.go
index 0a39dca86..5909b1e6a 100644
--- a/java/android_manifest_test.go
+++ b/java/android_manifest_test.go
@@ -78,10 +78,7 @@ func TestManifestMerger(t *testing.T) {
 		}
 	`
 
-	result := android.GroupFixturePreparers(
-		PrepareForTestWithJavaDefaultModules,
-		PrepareForTestWithOverlayBuildComponents,
-	).RunTestWithBp(t, bp)
+	result := PrepareForTestWithJavaDefaultModules.RunTestWithBp(t, bp)
 
 	manifestMergerRule := result.ModuleForTests("app", "android_common").Rule("manifestMerger")
 	android.AssertPathRelativeToTopEquals(t, "main manifest",
@@ -129,10 +126,7 @@ func TestManifestValuesApplicationIdSetsPackageName(t *testing.T) {
 
 	`
 
-	result := android.GroupFixturePreparers(
-		PrepareForTestWithJavaDefaultModules,
-		PrepareForTestWithOverlayBuildComponents,
-	).RunTestWithBp(t, bp)
+	result := PrepareForTestWithJavaDefaultModules.RunTestWithBp(t, bp)
 
 	manifestMergerRule := result.ModuleForTests("test", "android_common").Rule("manifestMerger")
 	android.AssertStringMatches(t,
diff --git a/java/android_resources.go b/java/android_resources.go
index 8c5908f69..038a260d9 100644
--- a/java/android_resources.go
+++ b/java/android_resources.go
@@ -21,14 +21,6 @@ import (
 	"android/soong/android"
 )
 
-func init() {
-	registerOverlayBuildComponents(android.InitRegistrationContext)
-}
-
-func registerOverlayBuildComponents(ctx android.RegistrationContext) {
-	ctx.RegisterPreSingletonType("overlay", OverlaySingletonFactory)
-}
-
 var androidResourceIgnoreFilenames = []string{
 	".svn",
 	".git",
@@ -84,7 +76,38 @@ type globbedResourceDir struct {
 func overlayResourceGlob(ctx android.ModuleContext, a *aapt, dir android.Path) (res []globbedResourceDir,
 	rroDirs []rroDir) {
 
-	overlayData := ctx.Config().Get(overlayDataKey).([]overlayGlobResult)
+	overlayData := ctx.Config().Once(overlayDataKey, func() interface{} {
+		var overlayData []overlayGlobResult
+
+		appendOverlayData := func(overlayDirs []string, t overlayType) {
+			for i := range overlayDirs {
+				// Iterate backwards through the list of overlay directories so that the later, lower-priority
+				// directories in the list show up earlier in the command line to aapt2.
+				overlay := overlayDirs[len(overlayDirs)-1-i]
+				var result overlayGlobResult
+				result.dir = overlay
+				result.overlayType = t
+
+				files, err := ctx.GlobWithDeps(filepath.Join(overlay, "**/*"), androidResourceIgnoreFilenames)
+				if err != nil {
+					ctx.ModuleErrorf("failed to glob resource dir %q: %s", overlay, err.Error())
+					continue
+				}
+				var paths android.Paths
+				for _, f := range files {
+					if !strings.HasSuffix(f, "/") {
+						paths = append(paths, android.PathForSource(ctx, f))
+					}
+				}
+				result.paths = android.PathsToDirectorySortedPaths(paths)
+				overlayData = append(overlayData, result)
+			}
+		}
+
+		appendOverlayData(ctx.Config().DeviceResourceOverlays(), device)
+		appendOverlayData(ctx.Config().ProductResourceOverlays(), product)
+		return overlayData
+	}).([]overlayGlobResult)
 
 	// Runtime resource overlays (RRO) may be turned on by the product config for some modules
 	rroEnabled := a.IsRROEnforced(ctx)
@@ -110,44 +133,3 @@ func overlayResourceGlob(ctx android.ModuleContext, a *aapt, dir android.Path) (
 
 	return res, rroDirs
 }
-
-func OverlaySingletonFactory() android.Singleton {
-	return overlaySingleton{}
-}
-
-type overlaySingleton struct{}
-
-func (overlaySingleton) GenerateBuildActions(ctx android.SingletonContext) {
-	var overlayData []overlayGlobResult
-
-	appendOverlayData := func(overlayDirs []string, t overlayType) {
-		for i := range overlayDirs {
-			// Iterate backwards through the list of overlay directories so that the later, lower-priority
-			// directories in the list show up earlier in the command line to aapt2.
-			overlay := overlayDirs[len(overlayDirs)-1-i]
-			var result overlayGlobResult
-			result.dir = overlay
-			result.overlayType = t
-
-			files, err := ctx.GlobWithDeps(filepath.Join(overlay, "**/*"), androidResourceIgnoreFilenames)
-			if err != nil {
-				ctx.Errorf("failed to glob resource dir %q: %s", overlay, err.Error())
-				continue
-			}
-			var paths android.Paths
-			for _, f := range files {
-				if !strings.HasSuffix(f, "/") {
-					paths = append(paths, android.PathForSource(ctx, f))
-				}
-			}
-			result.paths = android.PathsToDirectorySortedPaths(paths)
-			overlayData = append(overlayData, result)
-		}
-	}
-
-	appendOverlayData(ctx.Config().DeviceResourceOverlays(), device)
-	appendOverlayData(ctx.Config().ProductResourceOverlays(), product)
-	ctx.Config().Once(overlayDataKey, func() interface{} {
-		return overlayData
-	})
-}
diff --git a/java/app_test.go b/java/app_test.go
index 4d3b2dc4d..5cb4a2301 100644
--- a/java/app_test.go
+++ b/java/app_test.go
@@ -558,7 +558,6 @@ func TestResourceDirs(t *testing.T) {
 		t.Run(testCase.name, func(t *testing.T) {
 			result := android.GroupFixturePreparers(
 				PrepareForTestWithJavaDefaultModules,
-				PrepareForTestWithOverlayBuildComponents,
 				fs.AddToFixture(),
 			).RunTestWithBp(t, fmt.Sprintf(bp, testCase.prop))
 
@@ -1283,7 +1282,6 @@ func TestAndroidResourceProcessor(t *testing.T) {
 
 			result := android.GroupFixturePreparers(
 				PrepareForTestWithJavaDefaultModules,
-				PrepareForTestWithOverlayBuildComponents,
 				fs.AddToFixture(),
 			).RunTestWithBp(t, bp)
 
@@ -1566,7 +1564,6 @@ func TestAndroidResourceOverlays(t *testing.T) {
 		t.Run(testCase.name, func(t *testing.T) {
 			result := android.GroupFixturePreparers(
 				PrepareForTestWithJavaDefaultModules,
-				PrepareForTestWithOverlayBuildComponents,
 				fs.AddToFixture(),
 				android.FixtureModifyProductVariables(func(variables android.FixtureProductVariables) {
 					variables.DeviceResourceOverlays = deviceResourceOverlays
diff --git a/java/java_test.go b/java/java_test.go
index c54c0e68f..81119a79e 100644
--- a/java/java_test.go
+++ b/java/java_test.go
@@ -47,10 +47,6 @@ var prepareForJavaTest = android.GroupFixturePreparers(
 	cc.PrepareForTestWithCcBuildComponents,
 	// Include all the default java modules.
 	PrepareForTestWithDexpreopt,
-	PrepareForTestWithOverlayBuildComponents,
-	android.FixtureRegisterWithContext(func(ctx android.RegistrationContext) {
-		ctx.RegisterPreSingletonType("sdk_versions", sdkPreSingletonFactory)
-	}),
 )
 
 func TestMain(m *testing.M) {
diff --git a/java/rro_test.go b/java/rro_test.go
index 8067a4703..c4a4d04be 100644
--- a/java/rro_test.go
+++ b/java/rro_test.go
@@ -62,7 +62,6 @@ func TestRuntimeResourceOverlay(t *testing.T) {
 
 	result := android.GroupFixturePreparers(
 		PrepareForTestWithJavaDefaultModules,
-		PrepareForTestWithOverlayBuildComponents,
 		android.FixtureModifyConfig(android.SetKatiEnabledForTests),
 		fs.AddToFixture(),
 	).RunTestWithBp(t, bp)
@@ -330,7 +329,6 @@ func TestEnforceRRO_propagatesToDependencies(t *testing.T) {
 		t.Run(testCase.name, func(t *testing.T) {
 			result := android.GroupFixturePreparers(
 				PrepareForTestWithJavaDefaultModules,
-				PrepareForTestWithOverlayBuildComponents,
 				fs.AddToFixture(),
 				android.FixtureModifyProductVariables(func(variables android.FixtureProductVariables) {
 					variables.ProductResourceOverlays = productResourceOverlays
diff --git a/java/sdk.go b/java/sdk.go
index ddd99bb33..ad71fb236 100644
--- a/java/sdk.go
+++ b/java/sdk.go
@@ -17,8 +17,6 @@ package java
 import (
 	"fmt"
 	"path/filepath"
-	"sort"
-	"strconv"
 
 	"android/soong/android"
 	"android/soong/java/config"
@@ -27,12 +25,10 @@ import (
 )
 
 func init() {
-	android.RegisterPreSingletonType("sdk_versions", sdkPreSingletonFactory)
 	android.RegisterParallelSingletonType("sdk", sdkSingletonFactory)
 	android.RegisterMakeVarsProvider(pctx, sdkMakeVars)
 }
 
-var sdkVersionsKey = android.NewOnceKey("sdkVersionsKey")
 var sdkFrameworkAidlPathKey = android.NewOnceKey("sdkFrameworkAidlPathKey")
 var nonUpdatableFrameworkAidlPathKey = android.NewOnceKey("nonUpdatableFrameworkAidlPathKey")
 var apiFingerprintPathKey = android.NewOnceKey("apiFingerprintPathKey")
@@ -213,44 +209,6 @@ func decodeSdkDep(ctx android.EarlyModuleContext, sdkContext android.SdkContext)
 	}
 }
 
-func sdkPreSingletonFactory() android.Singleton {
-	return sdkPreSingleton{}
-}
-
-type sdkPreSingleton struct{}
-
-func (sdkPreSingleton) GenerateBuildActions(ctx android.SingletonContext) {
-	sdkJars, err := ctx.GlobWithDeps("prebuilts/sdk/*/public/android.jar", nil)
-	if err != nil {
-		ctx.Errorf("failed to glob prebuilts/sdk/*/public/android.jar: %s", err.Error())
-	}
-
-	var sdkVersions []int
-	for _, sdkJar := range sdkJars {
-		dir := filepath.Base(filepath.Dir(filepath.Dir(sdkJar)))
-		v, err := strconv.Atoi(dir)
-		if scerr, ok := err.(*strconv.NumError); ok && scerr.Err == strconv.ErrSyntax {
-			continue
-		} else if err != nil {
-			ctx.Errorf("invalid sdk jar %q, %s, %v", sdkJar, err.Error())
-		}
-		sdkVersions = append(sdkVersions, v)
-	}
-
-	sort.Ints(sdkVersions)
-
-	ctx.Config().Once(sdkVersionsKey, func() interface{} { return sdkVersions })
-}
-
-func LatestSdkVersionInt(ctx android.EarlyModuleContext) int {
-	sdkVersions := ctx.Config().Get(sdkVersionsKey).([]int)
-	latestSdkVersion := 0
-	if len(sdkVersions) > 0 {
-		latestSdkVersion = sdkVersions[len(sdkVersions)-1]
-	}
-	return latestSdkVersion
-}
-
 func sdkSingletonFactory() android.Singleton {
 	return sdkSingleton{}
 }
diff --git a/java/testing.go b/java/testing.go
index 16bdd80a1..e883bcb4c 100644
--- a/java/testing.go
+++ b/java/testing.go
@@ -118,8 +118,6 @@ var PrepareForTestWithDexpreoptWithoutFakeDex2oatd = android.GroupFixturePrepare
 	dexpreopt.PrepareForTestByEnablingDexpreopt,
 )
 
-var PrepareForTestWithOverlayBuildComponents = android.FixtureRegisterWithContext(registerOverlayBuildComponents)
-
 // Prepare a fixture to use all java module types, mutators and singletons fully.
 //
 // This should only be used by tests that want to run with as much of the build enabled as possible.